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PC817 8, 4 & 2 channel opto isolator for Arduio ESP32 ESP8266. PC817 8,4 and 2 channel opto isolator for Arduio ESP32 ESP8266. It uses the PC817 opto isolator. Great for use in noisy circuits where signal lines require electrical isolation.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.